They should use PPD (Pixels per degree) to define resolution. It's the only standard that does not change with field of view. For example a 4K panel has much worse resolution on a 170º headset than a 110º headset.They should go by megapixels. 4k is 8million pixels and 8k is about 32million pixels. These glasses are about 16million pixels, so it's not 8k.